CH2CN anion

• Formula: C₂H₂N^-
• Molecular weight: 40.0445
• CAS Registry Number: 21438-99-3
• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • References
  • Notes
• Other data available:
  • Vibrational and/or electronic energy levels
• Options:
  • Switch to calorie-based units

Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C₂H₂N^- +  =

By formula: C₂H₂N^- + H⁺ = C₂H₃N

C₂H₂N^- +  = (C₂H₂N^- • )

By formula: C₂H₂N^- + C₂H₃N = (C₂H₂N^- • C₂H₃N)

C₂H₂N^- +  = (C₂H₂N^- • )

By formula: C₂H₂N^- + H₂O = (C₂H₂N^- • H₂O)

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Protonation reactions

C₂H₂N^- +  =

By formula: C₂H₂N^- + H⁺ = C₂H₃N

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

C₂H₂N^- +  = (C₂H₂N^- • )

By formula: C₂H₂N^- + C₂H₃N = (C₂H₂N^- • C₂H₃N)

C₂H₂N^- +  = (C₂H₂N^- • )

By formula: C₂H₂N^- + H₂O = (C₂H₂N^- • H₂O)

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Graul and Squires, 1990
Graul, S.T.; Squires, R.R., Gas-Phase Acidities Derived from Threshold Energies for Activated Reactions, J. Am. Chem. Soc., 1990, 112, 7, 2517, https://doi.org/10.1021/ja00163a007 . [all data]

Cumming and Kebarle, 1978
Cumming, J.B.; Kebarle, P., Summary of gas phase measurements involving acids AH. Entropy changes in proton transfer reactions involving negative ions. Bond dissociation energies D(A-H) and electron affinities EA(A), Can. J. Chem., 1978, 56, 1. [all data]

Zimmerman and Brauman, 1977
Zimmerman, A.H.; Brauman, J.I., Electron photodetachment from negative ions of C_2v symmetry. Electron affinities of allyl and cyanomethyl radicals, J. Am. Chem. Soc., 1977, 99, 3565. [all data]

Heni and Illenberger, 1986
Heni, M.; Illenberger, E., Electron attachment by saturated nitriles. Acrylonitrile (CH₂H₃CN), and benzonitrile (C₆H₅CN), Int. J. Mass Spectrom. Ion Phys., 1986, 73, 127. [all data]

Meot-ner, 1988
Meot-ner, M., The Ionic Hydrogen Bond and Solvation. 7. Interaction Energies of Carbanions with Solvent Molecules, J. Am. Chem. Soc., 1988, 110, 12, 3858, https://doi.org/10.1021/ja00220a022 . [all data]

Hiraoka, Mizure, et al., 1988
Hiraoka, K.; Mizure, S.; Yamabe, S.; Nakatsuji, Y., Gas Phase Clustering Reactions of CN^- and CH₂CN^- with MeCN, Chem. Phys. Lett., 1988, 148, 6, 497, https://doi.org/10.1016/0009-2614(88)80320-8 . [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, References

• Symbols used in this document:
  

  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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